Improvement in work-holders



UNITED STATES PATENT OFFICE.

RUSSELL W. PERKINS, OF WEST MERIDEN, ASSIGNOR TO HIMSELF AND JAMES H.HOLMES, OF WALLINGFORD, CONNECTICUT.

IMPROVEMENT IN WORK-HOLDERS.

Specification forming part of Letters Patent N 0. 138,691, dated May 6,1873; application filed February 6, 1873.

To all whom it may concern:

Be it known that I, RUssELL W. PERKINS, of West Meriden, in the countyof New Haven and State of Connecticut, have invented a new Improvementin \Vork-Holders; and I do hereby declare the following, when taken inconnection with the accompanying drawin g and the letters of referencemarked there. on, to be a full, clear, and exact description of thesame, and which said drawing constitutes part of this specification, andrepresents 1n-- Figure 1, a perspective view of the workholder attachedto the table; Fig. 2, a side view, showing a section of the base on lineas w Fig. 3, the clamping-block, which is secured to the table.

This invention relates to a device for securing the article known as awork-holder to the table of a sewing-machine or other point where it isdesired to secure the holder; These have usually been secured by aclamping device, so that releasing the clamp would free the holder, orthey have been permanently secured to the table, so as not to beremoved. The object of this invention is to more readily secure theholder and yet allow it to be easily removed when required; and itconsists in constructing the base of the holder with a groove ofdovetail or equivalent form, and attaching to the table a block whichcorresponds to this groove, so that the holder may be set onto the blockand there held firmly and removed without loosening or removing the saidblock from the table.

A represents the table; B, the base of the work-holder, the work-holderhere represented as a figure of a sailor, C, having an anchor, D,pivoted to the body, the anchor serving as a cam to clamp the work uponthe base B. The base is constructed with a groove, a, on the under side,preferably of dovetail form. B is a block corresponding in form to thegroove, and fitting closely therein. The block is permanently secured tothe table, as seen in Fig. 2, and when the workholder is required foruse it is set onto the said block, and as soon as set, is firmlysecured, the groove and block both being preferably made slightlytapering. The holder is removed by simply drawing the base from theblock.

It will be understood that the holder shown is not a material part ofthis invention other styles of work-holders may be furnished with thebase 13, and the block constructed as described.

I claim as my invention- A work-holder, the base of which is constructed with a groove or slot, combined with a correspondingly-shapedblock to be attached to the table, so that by means of the said blockthe holder may be secured to or removed from the table without removingthe block from the table, substantially as set forth.

RUSSELL W. PERKINS.

Witnesses:

A. J. TIBBITs, J. H. SHUMWAY.

